noun🔗ShareA catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine."During a severe allergic reaction, doctors often use epinephrine to quickly raise blood pressure and open airways. "medicinephysiologybiochemistrybodysubstancechemistryChat with AIVocabulary GamePractice Reading
